DUCATION
M.S., Department of Materials Science and Engineering, Stony Brook University, NY Dec 2013
B.S., College of Materials Science and Engineering, Beijing University of Technology, China 2006
COMPUTER SKILLS
Minitab, LabVIEW, Matlab, Origin, ImageJ, Igro Pro, Microsoft Office Suite, AutoCAD
HIGHLIGHTS
4 Years Experience in Thin Film Growth, 5 Years Experience in Materials Surface/Structure Analysis, 2 Years Experience in Deposition Facility Setting Up and Ultra-High Vacuum Operation
PROCESSING&EXPERIENCE SKILLS
Material Fabrication: Expertise and hands on experience in PVD (Evaporative deposition, Sputter deposition), UHVCVD, Flame Spray/Plasma Spray Operation, UHV system Operation, Ultra High Vacuum (UHV) chamber set up and redesign
Material Property Characterization: Hands on experience in characterization techniques such as Structure Analysis (XRD), Surface Analysis (XRR/SEM/EDX/XPS/AFM/STEM/GISAXS), 3D Optical Surface Profilers Analysis, Metallographic Analysis, Laser Flash (Thermal Conductivity Measurement), DTA (Differential Thermal Analysis) & TGA (Thermogravimetric Analysis), Electrical Resistivity and Impedance Measurements, Micro-hardness Analysis
RESEARCH&WORK EXPERIENCE
02/2011-present Research Assistant, Collider-Accelerator Department, Brookhaven National Laboratory
Project: Antimony Thin Films Analysis for Multi-Alkali Semiconductor Photocathodes
Built and tested the new ultra-high vacuum deposition system, achieved expected vacuum condition.
Deposited Sb thin film with different deposition rates on Si (100) substrate, mastered the whole preparation process.
Measured the surface roughness and particle size by Atomic Force Microscopy (AFM). Investigated the morphology of Sb thin films through X-ray Diffraction (XRD) via X20a beamline at NSLS BNL, determined the crystalline structure of the Sb thin films.
Achieved 8.4% quantum efficiency (QE) photocathode by improving the traditional recipe, it was the highest QE photocathode made in BNL deposition systems.
Project: In-Situ Characterization of Alkali Antimonide Semiconductor Photocathodes.
Grown multi-alkali cathodes by using evaporative deposition and sputter deposition methods on Si(100) substrates with different substrate temperature in UHV chamber.
Investigated the crystalline evolution during growth of bi-alkali cathodes via in-situ synchrotron X-ray diffraction (XRD) via X21 beamline at NSLS BNL and G3 beamline at CHESS Cornell.
Analyzed the surface roughness of photocathode thin film by X-ray Reflectivity (XRR) and Grazing-incidence Small-angle X-ray Scattering (GISAXS). Calculated the XRR data via matlab and collected dynamic photocurrent data by LabVIEW.
Inspected Sb element by Scanning Electron Microscope (SEM) to confirm the thickness measured by Thin-film Thickness Monitor (FTM), used Energy-dispersive X-ray Spectroscopy (EDX) to analyze the elemental composition of the samples.
Project: X-ray Electron Spectroscopy and UHV-Atomic-Force Microscopy Analysis of the K2CsSb Photocathodes Growth
Obtained Alkali-Antimonide photocathodes on Si (100) by using modified deposition procedure in a commercial high vacuum chamber.
Used X-ray Photoelectron Spectroscopy (XPS) to reveal the chemical composition and oxidation state of the components.
Analyzed the surface roughness of K2CsSb photocathode through UHV-Atomic Force Microscope (UHV-AFM), found the relationship between deposition procedure and final roughness of photocathode.
Project: Multi Alkali Photocathde Deposition System Testing for Energy Recovery Linac (ERL)
Grown Multi Alkali photocathode in custom-made deposition chamber for Energy Recovery Linac of Brookhaven National Lab.
Tested the transportation system in cleanroom environment, successfully obtained photocathode after connecting both systems together.
Assembled large grain Niobium superconducting radio frequency (SRF) electron photoinjector in Class 100 cleanroom and tested it in superconducting state.
2009-2010 Research Assistant, Center for Thermal Spray Research (CTSR), Stony Brook University
Project: Wear Erosion and Corrosion Testing of HVOF Pure Nickel Coating
Designed the experiment and calculated the final results by Minitab and found the main parameter.
Analyzed the relationship between the mass loss of the coating and their corrosion resistant rate.
Obtained the corrosion resistant data through electrochemical corrosion experiment, analyzed the wear erosion via Pin-on-Disk apparatus.
Project: Linearly Reciprocating Ball-on-Flat Sliding Wear Test and Microstructure Analysis on Plasma Thermal Sprayed Yttria-Stablilzed Zirconia (YSZ) Coating
Compared the mass loss rate and analyzed the microstructure of coating via 3D opt...
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